Guinan was the only real counselor. Troi seemed more interested in being a human lie detector on the bridge (when she wasn't sensing "great pain" or "joy").
Right on. She basically stands there and tells Picard: "I sense a great deal of apprehension. They could be deceiving us but I can't say."
Troi asks how you feel. Guinan makes you hash out what's bothering you and helps you to find direction as to what to do next.